Grain and food cooker



lPatented May 4,1920;

Il IH .lil`jlli` c. DAKIN.

GRAIN AND FOOD COOKER.

APPLICATIGN FILED NOV. 26, 1917.

' iIl NH W. QN

lll/1 UNITED sTATEs Ai-mTENT OFFICE.

` IsAAc c, mann,l or` owosso, MICHIGAN.

GRAINAND roon cocinarh and the like, although it is very desirable foruse in cooking grain for any other purose. p The main object of thepresent invention resides in the fact that a cooker constructed andarranged according to the idea submitted accomplishes the ultimateresult of properly conditioning the grain in a more thorou h, even andeconomical manner.

nother object of the invention resides in the combination of the partsin which the v cycle of operation can be reversed and on being reversedacts as a cleaning medium for the cooker.

With these and other objects in view as will be apparent to thoseskilled in the art I will now specifically describe my invention whichshould be read in conjunction with the attached drawings.

In the drawings Figure 1 is a longltudlnal sectional view of the entireapparatus with its pipe connections and Fig. 2 is a cross sectionl takenon line A B F ig.l 1.

Similar letters of reference indicate like parts'throughout the severalviews.

In the accompanying drawings l indicates an exterior cylindrical casingwhich is ro: tatably supported in standards 2-2 by the bearings 3-'3arranged centrally of the heads of the casing 1, the bearings beinghollowed for a purpose hereinafter described;

a foraminated cylinder 4. This cylinder 4 has positioned centrallythereof a perforated pipe 5 which is plugged at one end as illustratedat 6, this end of the pipe is fastened in any suitable manner to theendwall 7 of the foraminated cylinder and the opposite end of the pipe 5extends through the oppo- Speccation of Letters Patent.

Application led November 26, 1917. Serial No. 203,977.

Arranged concentrically within? and spaced on all sides from the casing1 is Patented May 4, 1920.

site' end wan s of the y the exterior cylincylinder 4 and alsoA 'throughthe end Wall 9 o drical casing 1 and terminates within the hollowedportion of one of the bearings 3. Stay rods 21 are arranged within thecylinders to properly brace them in their spaced relation and may alsobe connected to the perforated pipe to support thev same intermediateits ends. Through the opposite end wall 10 of the casing 1 extends ashort section of a pipe 11, this pipe communicates with the spacebetween the casing l and the cylinder 4 and is branched off 1n oppositevertical directions as at 12--12 which terminate in horizontallyarranged pipings 13-13. The sections12-12 and 13-13 of the pipe justdescribed are' perforated as indicated at 14 and are` sealed at theirterminal ends by any suitable means such as plugs 15-15. .The pipe 11terminates within the hollowed portionl of one of the bearings 3.

Into the bearing member whichcontains the-pipe l1 extends an inlet pipe16 which is provided `with a valve 17 by which the amount of steamadmitted may be regulated, while into the opposite bearing there extendsan outlet pipe 18 which is provided with a regulating valve 19. Suitablestuiling boxes 20-20 are arranged on the inlet and outlet pipes wherethey enter into thebearings to prevent the escape of steam.

Access to the inner cylinder is had through the openin 20. which isclosed by any screw bolts 27; i `desired more than one of these chargingopenings may be provided.

Communication may be had, during the cooking operation, to the interiorforamiv.

nated cylinder in Iorder to test the material therein to determinewhether .or not the grain. is cooked to the proper degree through theventv22 in which there is a cutl o valve 23. y

In order thatI the cooker may be easily and thoroughly cleaned there isprovided a blow off pi e which when opened usually after a cookingoperation allows the trapped steamto travel backward through the machineand carry oifwith it all sediment and waste matter that might havecollected between'the twol cylinders. To carry out this cycle ofoperation a blow` of pipe 24 is ar vtrally arranged perforated pipe 5.

ran ed in communication with the iiilet'pipe 16 etween the cookerv andthe valve 17. This blow ofi' pipe has ya regulating valve 24 which maybe opened or closed according to the cycle of operation.

It is thought advisable to provide the cylindrical casing 1 with valvedpipe sections 25-25 to one of which a liose or water supply pipe may beconnectedwhile the other is left open so that the cooker mayoccasionally be Washed or iushed. Any suitable means maybe used to giverotation to the cylinders either in the cooking or cleaning operation.Also to this cylinder there is attached a pressure gage 26.

The complete operation of the device is as follows: All valvesconsidered to be closed, the foraminated cylinder is charged with grainand the doors closed, and'power applied to five the cylinders thedesired rotation.

admit steam into the perforated pipe sections 12-12 and 13-13 wl-iichdelivers the steam into'the space-between the cylinders. \This spaceallows the steam to freely circulate about the foraminated cylinder 4and finally work its wa into the mass of material within the cylinderand enter the `cen- When suiiicient pressure is attained within the`cylinders as will be. determined by looking at the pressure gage 26 theAoutlet valve 19 is o ened but'not enough to reduce ythe desireVpressure thereby allowingy the dead steam to 'be forced out by theentering live steam. After a sufficient length of time the vent 22 maybe opened to allow a small amount of material within the foraminatedcylinder 4 to escape in order that it may be examined to see if theoperation of cooking is completed. 4If so, valves 17 and 19 are again'closed and the blow ofi` regulating valve 24 opened, this allows thesteam to esca e back throughthe cylinders and out at t e blow oil' pipe24. In its backward course through the cylinders the steam carries withit all sediment and wastel material which mi ht have collected into thespace between t e cylinders due to the agitation of the material withinthe foraminated cylinder 4. `The rotation of the cylinders is 't enstopped and the cooked material re-4 moved, the `cooker being ready toreceive another batch.

It will thereforebe noted that in the construction under considerationafter the cooking operation is completed,` simply -by manipulating thevalves the machine may be automatically cleaned which is a greatsavingin .time over the old hand method heretofore employed. Should itbe desired to flush orwash the cookera hose or water supply pipe may beconnected' to the valved pipe sections 25-25.' y

T e valve 17 is then opened to tion of a horizontally arranged outercylindrical casing, a foraminated cylinder within and spaced from theside and head walls of fthe outer casing, a steam inlet through thevhead of the outer'cyIinder, a pipe in communication with the inlet fordelivering steam'into various portions of the space between tliecylinders, a centrally arranged exhaust pipe extending through theforaminated'cylinderl and communicating with an outlet and regulatingvalves for governing the inlet and outlet.

2. In a rotary steam cooker, the combination of a horizontally arrangedouter cylindrical casing, a foraminated cylinder within and spaced fromthe side and head walls of the outer casing, a steam inlet, a pipehaving branches therein in communication with the inlet for deliveringsteam into the space between the heads and sides of the cylinders, anexhaust pipe axially'arranged within the foraminated cylinder andcommunicating with an outlet and regulating valves for governing theinlet and outlet.

3. In a rotary steam cooker, the combination of a horizontally arrangedouter cylindrical casing, a foraminatcd cylinder within and spaced 'fromthe side and head Walls of the outer casing, a steam inlet, a pipehaving perforated branches therein in communication with the inlet forldelivering steam into 'the space between the heads and sides of thecylinders, an exhaust pipe axially arranged within the foraminatedcylinder and communicating with an outlet and regulatcating'with anoutlet, regulating valves for ioo governing the inlet and outlet andblow of means associated with the steam delivering pipe to permit a backpressure through the cy inders 'to clean-the same when the inlet andoutlet valves are'. closed.

5. In a rotary steam cooker, the combination of an outer cylindricalcasing, a foraminated cylinder with-in and spaced from the inner wallsof the outer casing, a steam inlet, a pipe communicating` therewith fordelivering steam into the space between the cylinders, a pipe leadingfrom the interior a back prssure through the cylners to of the oramnacylncler and communclean the same. 10

eating with am mlle., :regulating valves for In testmnny Wh'reo' l ax mysgnmur@ govemng the mle and sublet, and a blow m h@ pfeseme of tw@Wltness'es.

off pipe having a, valve, 'gleein in com- L3M() C., JAKN., manica-tionWh the steam delivering pipe "Witnesses:

and adaptfe. Whn ils 1valve is @pene/cl and ELM@ l1 Wmm'r the inlet and;eufale valves closed to allow Mmm. J. Wmmcrgfl-N.

